/*******************************************************************************
 * Copyright (c) 2000, 2004 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 * D Port:
 *     Thomas Demmer <t_demmer AT web DOT de>
 *******************************************************************************/
module org.eclipse.swt.snippets.Snippet162;

/*
 * Adding an accessible listener to provide state information
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 */
import org.eclipse.swt.SWT;
import org.eclipse.swt.accessibility.ACC;
import org.eclipse.swt.accessibility.Accessible;
import org.eclipse.swt.accessibility.AccessibleAdapter;
import org.eclipse.swt.accessibility.AccessibleControlListener;
import org.eclipse.swt.accessibility.AccessibleControlAdapter;
import org.eclipse.swt.accessibility.AccessibleControlEvent;
import org.eclipse.swt.accessibility.AccessibleEvent;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;

import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.swt.widgets.TableItem;

import java.lang.all;


const STATE = "CheckedIndices";

void main () {
    Display display = new Display ();
    Image checkedImage = getCheckedImage (display);
    Image uncheckedImage = getUncheckedImage (display);
    Shell shell = new Shell (display);
    shell.setLayout (new FillLayout ());
    Table table = new Table (shell, SWT.BORDER);
    TableColumn column1 = new TableColumn (table, SWT.NONE);
    TableColumn column2 = new TableColumn (table, SWT.NONE);
    TableColumn column3 = new TableColumn (table, SWT.NONE);
    TableItem item1 = new TableItem (table, SWT.NONE);
    item1.setText ( ["first item", "a", "b"]);
    item1.setImage (1, uncheckedImage);
    item1.setImage (2, uncheckedImage);
    item1.setData (STATE, null);
    TableItem item2 = new TableItem (table, SWT.NONE);
    item2.setText ( ["second item", "c", "d"]);
    item2.setImage (1, uncheckedImage);
    item2.setImage (2, checkedImage);
    item2.setData (STATE,  new ArrayWrapperInt([2]));
    TableItem item3 = new TableItem (table, SWT.NONE);
    item3.setText ( ["third", "e", "f"]);
    item3.setImage (1, checkedImage);
    item3.setImage (2, checkedImage);
    item3.setData (STATE, new ArrayWrapperInt( [1, 2]));
    column1.pack ();
    column2.pack ();
    column3.pack ();

    Accessible accessible = table.getAccessible ();
    accessible.addAccessibleListener( new class AccessibleAdapter  {
        public void getName (AccessibleEvent e) {
            super.getName (e);
            if (e.childID >= 0 && e.childID < table.getItemCount ()) {
                TableItem item = table.getItem (e.childID);
                Point pt = display.getCursorLocation ();
                pt = display.map (null, table, pt);
                for (int i = 0; i < table.getColumnCount (); i++) {
                    if (item.getBounds (i).contains (pt)) {
                        int [] data = (cast(ArrayWrapperInt)item.getData (STATE)).array;
                        bool checked = false;
                        if (data !is null) {
                            for (int j = 0; j < data.length; j++) {
                                if (data [j] == i) {
                                    checked = true;
                                    break;
                                }
                            }
                        }
                        e.result = item.getText (i) ~ " " ~ (checked ? "checked" : "unchecked");
                        break;
                    }
                }
            }
        }
    });

    accessible.addAccessibleControlListener (new class AccessibleControlAdapter  {
        public void getState (AccessibleControlEvent e) {
            super.getState (e);
            if (e.childID >= 0 && e.childID < table.getItemCount ()) {
                TableItem item = table.getItem (e.childID);
                int [] data =(cast(ArrayWrapperInt)item.getData (STATE)).array;
                if (data !is null) {
                    Point pt = display.getCursorLocation ();
                    pt = display.map (null, table, pt);
                    for (int i = 0; i < data.length; i++) {
                        if (item.getBounds (data [i]).contains (pt)) {
                            e.detail |= ACC.STATE_CHECKED;
                            break;
                        }
                    }
                }
            }
        }
    });
    shell.open ();
    while (!shell.isDisposed ()) {
        if (!display.readAndDispatch ()) display.sleep ();
    }
    checkedImage.dispose ();
    uncheckedImage.dispose ();
    display.dispose ();
}

Image getCheckedImage (Display display) {
    Image image = new Image (display, 16, 16);
    GC gc = new GC (image);
    gc.setBackground (display.getSystemColor (SWT.COLOR_YELLOW));
    gc.fillOval (0, 0, 16, 16);
    gc.setForeground (display.getSystemColor (SWT.COLOR_DARK_GREEN));
    gc.drawLine (0, 0, 16, 16);
    gc.drawLine (16, 0, 0, 16);
    gc.dispose ();
    return image;
}

Image getUncheckedImage (Display display) {
    Image image = new Image (display, 16, 16);
    GC gc = new GC (image);
    gc.setBackground (display.getSystemColor (SWT.COLOR_YELLOW));
    gc.fillOval (0, 0, 16, 16);
    gc.dispose ();
    return image;
}